Please go into the Lightroom Preferences > General Tab and uncheck the Show Import dialog when memory card detected box. This will prevent Lightroom from launching.
Got it all figured out within Windows 10 - Thanks!
As I mentioned in my message, I had already tried that I tried that and it does not solve the problem. The answer is to disable USB autoplay functionality within Windows 10
It worked! Thank you idezignit53
This worked perfectly. Once you follow these instructions, you can test it out by re-plugging in the USB. You will then get Windows AutoPlay menu. You see several options plus a line about view more Auto Play options. Decide how you want to handle it click save. Lightroom will no longer autostart.